If the owner fails to comply with such written notice or extension, then the governing body is authorized to take such action as may be necessary to completely rat-stop the building or structure at the expense of the owner, and the City Clerk shall submit bills for the expense thereof to the owner of the building or structure. If the bills are not paid within 60 days, the City Clerk shall certify the amount due to the City Treasurer and the charge shall be a lien against the property where the work has been done, and the owner shall be promptly billed therefor. The expense thereof shall include the cost of labor, materials, equipment and any other actual expense necessary for rat-stoppage.